A characteristic feature of the fungal vegetative plantbody (mycelium) is its formation from independent coenocytic tubes or cell-threads.
Such an independent coenocytic branch or cell-thread is called a hypha.
Of the thallus, whatever its external form, by branched, continuous or septate, coenocytic tubes (Siphoneae and Fungi), or by simple or branched cell-threads (Red and many Green Algae), in both cases growing mainly or entirely at the apex of each branch, is almost universal in.
In coenocytic forms the zoospores would seem to arise simultaneously, probably because many nuclei are already present.
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